I’m curious about headphone audiophile users take on flat response vs Hi-Fi sound, so I’m hoping to get a discussion going.

I’ve been an audio professional all my life, so obviously I am a big proponent of a flat response.

I have after many years had to accept that it’s merely because I’m “tuned” for a flat response sounding good, and as such that’s what sound good to me, even to a point when I tune PA’s. I’ve learned this because that’s my reference when mixing records on various systems.

Audio is a learned subjective experience (in my humble opinion), and as such why do we not aim for headphones that have accurate replication of the intended record sound, with a realistic stereo image?

I’m curious to hear your opinions.